Furnace



G. T. WYATT.

Dc. 26,v 1922.

FURNACE.

FILED DEC. 30. 1921.

n mm MW mw W E 6, m E 6 GERGE THOMS 'WYATT, `OF OLLVISTEAD, KENTUCKY.

FURNACE.

Application filed December 30, 1921. Serial No. 526,603.

To all 'Lo/tom t may concern Be it known that l, GEORGE THOMAS WYATT, a citizen of the United States, and resident of Olmstead, in the county of Logan and State of Kentucky, have invented a new and improved Furnace, of which the following is a full, clear, and exact description,

My invention relates to a furnace, and aims to provide certain new and useful improvements in connection with a device of this character and particularly over the construction shown in my prior Patent #782,610, issued June 30, i903.

My present invention aims to provide a construction of the type stated by means of which any tendency of the parts becoming distorted or sagging incident to weight placed upon the same, and the action of heat, will be counteracted so that the usefulness of the furnace will not be destroyed after a comparatively short period of use.

A further object of this invention is the construction of a device of the character stated embodying the result set forth in the preceding paragraph, which furnace may be constructed at a nominal figure, and

Still further objects of this invention will become apparent from the annexed specification taken in connection with the drawings, which latter illustrate one practical embodiment of the same and in which;

liigure l is a sectional view of the furnace embodying my improved furnace and taken along the line l--l and in the direction of the arrows indicated in Figure iiigure 2 is a transverse sectional view taken along the line 2-2 and in the direction of the arrows illustrated in liigure l.

Figure 3 is an enlarged sectional view taken along the line 33 and in the direction of the arrows indicated in Figure 4, and

Figure l is a transverse sectional view taken along the line i--i and in the direction of the arrows indicated in Figure 3.

As in the structure presented in my previous patent, my present invention provides a furnace which includes a table or roof 5 from the side edges of which walls 6 extend downwardly, the stack 7 being also provided for the passage of the products of combustion. Also as in my previous patent, the device may be movablyi supported by pro viding suitable wheels 8 adjacent the forward end of the same and handles 9 adjacent the rear ends of the same whereby an operator may readily move the furnace to any location desired.

Further l provide U-shaped supports 10 as 60 in my previous patent, but it will be noted that l'. preferably construct these elements of angle iron, to provide greater strength. Also the legs of the supports 10 are preferably riveted to the central beam-portions of thev supports asat ll to malte. a rigid connection.

To further strengthen the furnace at this point, it will be noted that l utilize a bridge member which, as has been indicated in Figure 4L, is U shaped 'in cross section, the same including the body l2 formed with side lwalls 13, these latter portions being spaced from each other to an extent permitting of their straddling the body of a support ll and acting as a bridge extending between the legs of the same. Also as has been clearlyl indicated in Figure 2 it will be noted that the walls 13 increase in height to a point substantially intermediate the ends of the body l2 it being understood that due to this construction the resistance strength of the bridge member is greatly increased.

rlhus all of the objects set forth in the preamble of this specification are accomplished, and it will be appreciated that the use of the bridge member will not materially increase the cost of construction although the same will strengthen the parts of the furnace to a point at which no further objection in this connection Vwill be noted. lt will be further understood that :no objectiiin will arise in connection with the use of my pres' ent improved construction incident to the difference in the ratio of eqiansion of the bridge member with respect to the supporting member for the reason that these elements are merely placed in engagement with each other and not riveted together. ln other words the supporting member 10 is usually constructed of steel or wrought iron to provide the maximum amount of strength while the bridge member is preferably a casting to incorporate the maximum amount of heat resistance, and the ratio of expansion of these two elements would naturally be unequal, and if they were aiiixed with respectl to each other a distortion would invariably result. However as aforestated, due to the mode of supporting the bridge member by 110 the supporting element, no objection on this score will be noted.

ber associated with each of said supporting members, said supporting and bridging members being all formed of metal but said bridging members only being formed of cast iron.

GEORGE THoMAs WYATT. 

